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# Geometry

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 Sub Topics Etymologically, geometry is made up of two words: geo and metron. Geo means earth and metron is referred as measurement. Geometry is a branch of mathematics which deals with the studies of the problems related to the shape, size and position of figures as well as construction and measurement of angles sides etc. In other words, it is said to be a science which is pertaining to the study of geometrical figures.Geometry plays a very important role in our day-to-day life. Our world is made up of innumerous geometrical figures. From simplest needle to complex jet airplane, geometry is everywhere. Study of geometry is very useful and quite interesting.

## Plane Geometry

A plane is referred as a two-dimensional surface. A plane figure has no thickness and is, therefore, can be drawn on a sheet of paper. Few plane figures are shown below:

Plane geometry is the study of plane geometrical figures. Plane geometry deals with shapes like: circle, angle, triangle, rectangle, square etc. It is a vast study of measurement, construction, area and various applications on plane figures.

## Solid Geometry

A solid is a three-dimensional surface. A solid figure can not be drawn on a sheet of plane paper because it has thickness as well. Few images of solid figures are demonstrated below:

Solid geometry deals with the study of solid geometrical surfaces. It is concerned with the shapes such as: cube, cuboid, sphere, pyramid, cylinder, cone, prism etc.. Solid geometry is a branch of geometry dealing with the study of construction, measurement of area, volume and many more applications related to solid figures.

## Geometry Shapes

Geometry is the study of shapes. Geometrical shapes are generally two-dimensional and three-dimensional. study of higher dimensional figures also comes under geometry. The list of most commonly studied geometrical shapes is:
• Zero-dimensional shape: Point.
• One-dimensional shape: Line segment.
• Two-dimensional shapes:
1. Circle
2. Rectangle
3. Square
4. Trapezium
5. Parallelogram
6. Rhombus
7. Parabola
8. Ellipse etc.
• Three-dimensional shapes:
1. Sphere
2. Hemisphere
3. Cube
4. Cuboid
5. Cylinder
6. Cone
7. Prism
8. Pyramid etc.
• Multidimensional shapes: There are various multidimensional shapes which are generally studied in higher studies and researches.